The GT200 with EPDM seals is the correct pump for SodiumHydroxide / Caustic Soda and other caustic Chemicals. GoatThroat GT200 EPDM Pumps are also ideally suited to transfer disinfectants and sanitizers for Covid 19 from bulk containers into use containers. They are like PPE – protective equipment – no spills, no splashing, no vapors. Best for viscosities like water, dispensing up to 4GPM. Flow is good up to 270 centipoise. We are stocked up and ready to ship to your facility today.